How did you do it. I don't actually see step by step instructions in that post
1- In Developer settings enable that OEM Unlock thing.
2- USB Debuggin enabled from same place.
3- Download the latest SuperSU 2.79 SR1 zip and have it placed on your phone. Root directory is preferred for convenience anyway.
4- Given you already have the Minimal ADB and Fastboot installed, just click on the app, run "adb devices" command to make sure the device is being shown. Then run "adb reboot bootloader". You will see phone entering bootloader mode.
5- Have the TWRPRC1 downloaded (~25 MB) on your computer. And place the .img file in the same destination where you have installed Minimal ADB Fastboot.
6- Run command "fastboot boot xxx.img" (xxx is basically the exact same name of the TWRP image file, just copy the name and paste in that place of xxx)
7- You will see TWRP screen on the phone. Now from here I don't know but I just hit on the keep system only option (no modification), and then used the advanced option and located and flashed the SuperSU zip. I am not sure whether I have TWRP or stock recovery, but my phone has root and that's all that matters to me for now.
And yes, there is not step by step instruction anywhere, but the guy on the SuperSU topic helped me big time. I guess those who have Nexus based phones for long time already know all these commands, so they don't think about the dumn people like us, who has used some other OEM for so long have forgotten how ADB works :laugh: